Steam-hose coupling.



' PATENTED' MAYSI, 1904..

5. H. GOLD. STEAM HOSE COUPLING.

APPLICATION TILED MAB. 14. 1904.

NO MODEL.

NO. 761,162. 4 v

UNITED STATES Patented May 31, 1904.

PATENT OFFICE.

EGBERT H. GOLD, OF CHICAGO, ILLINOIS.

STEAM-HOSE COUPLING.

SPECIFICATION forming part of Letters Patent No. 761,162, dated May 31, 1904. Original application filed April 10, 1902, Serial No. 102,197. Divided and this application filed March 14, 1904. Serial T0 aZZ whom it may concern.-

Be it known that I, EGBERT H. GOLD, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Steam-Hose. Couplers, of which the following is a specification.

This application is a division of my pending application, Serial No. 102,197, filed April 10, 1902.

My invention relates more especially to means for forming a steam-tight joint between the adjacent sections of steam hose couplersand also relates to means for permitting a free flow of steam to the usual relief-valve without obstructing the main steam-passage through the coupler-head. These and such other advantages as may hereinafter appear are attained by the devices illustrated in the accompanying drawings, in which Figure 1 represents one member of a hosecoupling fitted with my improvements in what Iconsider their preferred form. Fig. 2 shows the same parts as are shown in Fig. 1, but with the strainer, the bushing, and the gasket removed from the coupler-head. Fig. 3 is a perspective view' of the strainer. Fig. 4 is a sectional view of one form of my gasket fitted in a portion of the coupler-head. Fig. 5 is a crosssectional View on the line 5 5 of Fig. 1 looking in the direction indicated by the arrows.

Like letters of reference indicate the same parts in the several figures of the drawings.

Referring by letter to the accompanying drawings, A indicates a coupler-head of usual form provided with a longitudinal steam-passage B and with a familiar form of reliefvalve 0. Adjacent to the relief-valve C the longitudinal passage B is'enlarged at D for a purpose to be hereinafter shown. At E the coupler-head is provided with interior screwthreads.

Fis a cylindrical metallic screen adapted to fitagainst a shoulder f, formed therefor within the coupler-head A. G is a bushing adapted to be fitted against the opposite-end of the strainer F.

H is one form of my improved gasket adapted to be fitted into the coupler-head A.

(No model.)

In its preferred form the gasket H consists of a portion forming a section of a sphere, which is adapted to a similarly-formed seat provided therefor on the coupler. Extending backwardly from this section of a sphere is a cylindrical screw-threaded portion which is adapted to be screwed into the screw-threads formed in the longitudinal passage through the coupler-head.

As so constructed my apparatus is assembled in the manner shown in Fig. l. The screen F is seated against the shoulder f and extends across the enlarged portion of the longitudinal passage through the couplerhead, thereby providing an annular passage between the screen F and the coupler-head,

which annular passage communicates with the relief-valve O and affords free access of the steam to the relief-valve C through the numerous perforations in the screen F. At the same time it will be noted that the screen F is so mounted that it does not in any degree obstruct the free passage of steam through the coupler-head. This screen is held in position primarily by the bushing G, which is preferably screw-threaded into the steam-passage through thecoupler-head, so that the bushing G will hold the screen tightly in position whether or not the gasket is in place. However, it is entirely possible to dispense with the bushing G, for the reason that the gasket H is screw-threaded into the coupler-head A and will abut against the bushing G, so as to lock the same firmly in contact with the screen F, so the gasket Hmay be of such proportions as to abut against the screen F. It will thus be seen that I provide means for effectively excluding foreign matter from the relief-valve C, while at the same time I provide a free passage through the coupler-head, a screen which may be readily inserted and removed, and a gasket which is so secured in place as to be readily detached and reinserted. At the same time, in view of the fact that this gasket is made of a familiar material which while hard when cold is more or less plastic under the influences of heat and compression, the gasket H will have more or less play upon its hemispherical seat, thereby rendering it more adaptable in making a tight joint with the gasket upon the opposing coupler-section, whichis not shown in these drawings.

In Fig. LI have shown supplemental means for locking the gasket in position. To accomplish this result, I provide the gasket-seat with one or more recesses /L. hen the gasket is formed of the usual material, which becomes somewhat plastic under the influences of heat and compression, the material of which the gasket is formed will be forced into these recesses when the gasket is compressed and live steam is passing therethrough, so that when the coupler is uncoupled and the gasket is cooled the gasket may not be accidentally unscrewed from its seat, because of the engagement between the excrescences which have thus been formed upon the gasket and the recesses lb, within which they are seated. In Fig. 5 this is further shown in detail.

Obviously other modifications and adaptations may be made without departing from the spirit of my invention.

I claim- 1. In a train-pipe coupling,the combination with a relief-valve, of a coupling provided with a steam-passage and with an annular passage surrounding said steampassage and communicating with said valve, a strainer arranged between said main passage and said annular passage, a compressible gasket screwed within said coupling and arranged to lock said strainer within said coupling, and a locking-recess in the seat for said gasket into which a portion of said gasket will be forced under the influence of heat and compression, substantially as described.

2. The combination with a train-pipe coupling, of a gasket formed of a composition which, while hard when cold, will be plastic when subjected to the heat of live steam passing therethrough, said gasket having screwthreaded engagement with said coupling, and one or more recesses within said coupling, into which aportion of said gasket-will be forced under the combined influences of compression and the heat'of live steam passing through said gasket, substantially as described.

3. The combination with a train-pipe coupling provided with a seat for a gasket, of recesses in said gasket-seat, and a compressible gasket of a material which, under the combined influences of compression and of the heat of steam passing therethrough, will be forced into said recesses, substantially as described.

4. The combination with a train-pipe coupling, of a compressible gasket having ahemispherical portion extending into a cylindrical portion, which extends rearwardly from the hemisphericalportion, the cylindrical portion having screw-threaded engagement with the interior of the coupling-head.

EGBERT H. GOLD,

Witnesses:

O; R. BARNETT, G. Y. DANKWARD. 

